Method and apparatus for controlling data writing in magnetic recording
subsystem
    1.
    发明授权
    Method and apparatus for controlling data writing in magnetic recording subsystem 失效
    用于控制磁记录子系统中数据写入的方法和装置

    公开(公告)号:US5163134A

    公开(公告)日:1992-11-10

    申请号:US304519

    申请日:1989-01-31

    摘要: A magnetic recording subsystem comprises a channel unit, a magnetic recording control unit having a data buffer for temporarily storing data blocks of data transferred from the channel unit and a plurality of magnetic recording units connected to the magnetic recording control unit. When the data is stored into the data buffer, a block number is assigned to each data block. When the data is read from the data buffer and to be stored into a designated magnetic recording unit, the block number supplied from the data buffer and the block number assigned when the data was stored into the data buffer are compared, and then the data is stored into the magnetic recording unit.

    摘要翻译: 磁记录子系统包括通道单元,磁记录控制单元,具有用于临时存储从通道单元传送的数据的数据块的数据缓冲器和连接到磁记录控制单元的多个磁记录单元。 当数据被存储到数据缓冲器中时,块号被分配给每个数据块。 当从数据缓冲器读取数据并将其存储到指定的磁记录单元中时,从数据缓冲器提供的块号和将数据存储到数据缓冲器中时分配的块号进行比较,然后将数据 存储到磁记录单元中。

    Data transfer speed control apparatus capable of varying speed of data
transfer between devices having different transfer speeds
    3.
    发明授权
    Data transfer speed control apparatus capable of varying speed of data transfer between devices having different transfer speeds 失效
    能够在具有不同传送速度的设备之间改变数据传送速度的数据传送速度控制装置

    公开(公告)号:US4931924A

    公开(公告)日:1990-06-05

    申请号:US133805

    申请日:1987-12-16

    申请人: Kenichi Kageura

    发明人: Kenichi Kageura

    摘要: A data transfer speed control apparatus for effecting data transfer between semiconductor storage devices and CPU channel devices having maximum transfer speeds different from each other has connection line setting sections indicating the maximum transfer speeds of the semiconductor storage devices and the CPU channel devices. When data transfer between one of the semiconductor storage devices and one of the channel devices is to be made, a transfer speed determining section determines an actual speed of data transfer between the one semiconductor storage device and the one channel device on the basis of the indicated maximum transfer speeds of the one semiconductor storage device and the one channel device to be that one of both the maximum transfer speeds which is lower. The transfer speed of the semiconductor storage device and the channel device is set to the transfer speed determined by the transfer speed determining section.

    摘要翻译: 用于实现半导体存储装置与具有彼此不同的最大传送速度的CPU信道装置之间的数据传送的数据传送速度控制装置具有指示半导体存储装置和CPU信道装置的最大传送速度的连接线设置部分。 当要在半导体存储装置之一和一个信道装置之一进行数据传送时,传送速度确定部分根据所指示的一个半导体存储装置和一个信道装置之间的数据传送的实际速度确定 一个半导体存储装置和一个通道装置的最大传送速度是两个最小传送速度中的一个较低的传送速度。 半导体存储装置和通道装置的传送速度被设定为由传送速度确定部分确定的传送速度。

    Disk control apparatus and its control method
    4.
    发明授权
    Disk control apparatus and its control method 失效
    磁盘控制装置及其控制方法

    公开(公告)号:US06970310B2

    公开(公告)日:2005-11-29

    申请号:US10382804

    申请日:2003-03-06

    摘要: A disk system that conducts diagnoses of magnetic heads at regular or irregular interval to detect occurrence of unwritable failure. The history of regions on magnetic recording media where write operations took place is managed and a region where an unwritable failure occurred is specified. Data that corresponds to the unwritable failure is recovered by taking advantage of the redundancy of a RAID system. The disk system includes a unit that, upon reading data, checks whether the data to be read was written on the magnetic recording media through a normal write function. Through this, old data is prevented from being sent to host devices as a result of unwritable failure, and unwritable failures can be dealt with without increasing the processing time to detect unwritable failures.

    摘要翻译: 以规则或不规则间隔进行磁头诊断的磁盘系统,以检测不可写故障的发生。 管理写入操作的磁记录介质上的区域的历史,并指定发生不可写失败的区域。 通过利用RAID系统的冗余来恢复对应于不可写故障的数据。 磁盘系统包括一个单元,当读取数据时,通过正常的写入功能来检查要读取的数据是否被写在磁记录介质上。 通过这种方式,由于不可抹杀的故障,防止旧的数据被发送到主机设备,并且可以处理不可写的故障,而不增加处理时间来检测不可写的故障。